외나로도 주변해역 퇴적물의 지화학적 특성과 저서 생물상 KCI OTHER

Title
외나로도 주변해역 퇴적물의 지화학적 특성과 저서 생물상
Alternative Title
Geochemical characteristics and benthic faunal facies in the sediments around the Oenaro Island, southern part of Korea
Author(s)
현상민; 최진우; 신경순; 장만
KIOST Author(s)
Hyun, Sangmin(현상민)Shin, Kyoungsoon(신경순)
Publication Year
2002-01
Abstract
In order to evaluate the relationship between geochemical characteristics and benthic facies of the sediments from the Oenaro Island where red tide proliferation is first observed every year including this year, surface and short multiple core sediment samples were analyzed in terms of geochemical and benthic facies variation. The contents of organic carbon, carbonate, and sulfide gas were relatively low. The variation in C/N ratios, which indicate nature of organic carbon, suggested that the organic carbon recorded in the study area is composed of mixtures of marine and terrigenous organic matters. The concentration of minor elements found at the surface and multiple core sediment samples were also low as well as the enrichment factors(Ef) for the seven heavy metals indicated that the sediment of this area is not polluted significantly. The macrobenthic faunal community comprised 61 species, and their mean density was 708 ind./m2. Polychaete worms were major taxa of this benthic community. A crustacean amphipod, Melita sp. was the most abundant species accounted for 20.7% of total abundance, and the small polychaetes such as Heteromastus filiformis, Paralacydonia poradoxa, Magelona japonica and Sigambra tentaculata were the next dominant species. The macrobenthos around the Oenaro Island were more diverse and abundant than that in Gamak Bay. The benthic communities in the study area sustained somewhat different species composition based on the cluster analysis and the MDS ordination. The benthic community health condition at three stations seemed to be unbalanced, and slightly polluted based on the biological index such as BPI and BC. There was no clear relationship between the geochemistry characteristic and the benthic faunal facies attributed by the micro-algal blooms in this coastal area.
ISSN
1225-4517
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5748
Bibliographic Citation
한국환경과학회지, v.11, no.3, pp.215 - 225, 2002
Publisher
한국환경과학회
Keywords
Oenaro Island; red tide; geochemical; benthic faunal facies
Type
Article
Publisher
한국환경과학회
Related Researcher
Research Interests

Marine environmentology,Marine environmentology,Organic chemistry,해양환경학,화학해양학,유기화학

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